A double-glazed window consists of two glass sheets, each of thickness 6 mm and thermal conductivity 0.8 Wmí1 Kí1 . The transmittance and reflectance of each glass sheet for beam radiation incident at...

A double-glazed window consists of two glass sheets, each of thickness 6 mm and thermal conductivity 0.8 Wmí1 Kí1 . The transmittance and reflectance of each glass sheet for beam radiation incident at 40° are 0.75 and 0.08 respectively. Calculate the overall transmittance of the window and the fraction of radiation absorbed in each glass sheet.